478 lines
16 KiB
Plaintext
478 lines
16 KiB
Plaintext
# 2010 September 21
|
|
#
|
|
# The author disclaims copyright to this source code. In place of
|
|
# a legal notice, here is a blessing:
|
|
#
|
|
# May you do good and not evil.
|
|
# May you find forgiveness for yourself and forgive others.
|
|
# May you share freely, never taking more than you give.
|
|
#
|
|
#***********************************************************************
|
|
#
|
|
# This file implements tests to verify that the "testable statements" in
|
|
# the lang_delete.html document are correct.
|
|
#
|
|
set testdir [file dirname $argv0]
|
|
source $testdir/tester.tcl
|
|
|
|
ifcapable !compound {
|
|
finish_test
|
|
return
|
|
}
|
|
|
|
proc do_delete_tests {args} {
|
|
uplevel do_select_tests $args
|
|
}
|
|
|
|
do_execsql_test e_delete-0.0 {
|
|
CREATE TABLE t1(a, b);
|
|
CREATE INDEX i1 ON t1(a);
|
|
} {}
|
|
|
|
# -- syntax diagram delete-stmt
|
|
# -- syntax diagram qualified-table-name
|
|
#
|
|
do_delete_tests e_delete-0.1 {
|
|
1 "DELETE FROM t1" {}
|
|
2 "DELETE FROM t1 INDEXED BY i1" {}
|
|
3 "DELETE FROM t1 NOT INDEXED" {}
|
|
4 "DELETE FROM main.t1" {}
|
|
5 "DELETE FROM main.t1 INDEXED BY i1" {}
|
|
6 "DELETE FROM main.t1 NOT INDEXED" {}
|
|
7 "DELETE FROM t1 WHERE a>2" {}
|
|
8 "DELETE FROM t1 INDEXED BY i1 WHERE a>2" {}
|
|
9 "DELETE FROM t1 NOT INDEXED WHERE a>2" {}
|
|
10 "DELETE FROM main.t1 WHERE a>2" {}
|
|
11 "DELETE FROM main.t1 INDEXED BY i1 WHERE a>2" {}
|
|
12 "DELETE FROM main.t1 NOT INDEXED WHERE a>2" {}
|
|
}
|
|
|
|
# EVIDENCE-OF: R-20205-17349 If the WHERE clause is not present, all
|
|
# records in the table are deleted.
|
|
#
|
|
drop_all_tables
|
|
do_test e_delete-1.0 {
|
|
db transaction {
|
|
foreach t {t1 t2 t3 t4 t5 t6} {
|
|
execsql [string map [list %T% $t] {
|
|
CREATE TABLE %T%(x, y);
|
|
INSERT INTO %T% VALUES(1, 'one');
|
|
INSERT INTO %T% VALUES(2, 'two');
|
|
INSERT INTO %T% VALUES(3, 'three');
|
|
INSERT INTO %T% VALUES(4, 'four');
|
|
INSERT INTO %T% VALUES(5, 'five');
|
|
}]
|
|
}
|
|
}
|
|
} {}
|
|
do_delete_tests e_delete-1.1 {
|
|
1 "DELETE FROM t1 ; SELECT * FROM t1" {}
|
|
2 "DELETE FROM main.t2 ; SELECT * FROM t2" {}
|
|
}
|
|
|
|
# EVIDENCE-OF: R-26300-50198 If a WHERE clause is supplied, then only
|
|
# those rows for which the WHERE clause boolean expression is true are
|
|
# deleted.
|
|
#
|
|
# EVIDENCE-OF: R-23360-48280 Rows for which the expression is false or
|
|
# NULL are retained.
|
|
#
|
|
do_delete_tests e_delete-1.2 {
|
|
1 "DELETE FROM t3 WHERE 1 ; SELECT x FROM t3" {}
|
|
2 "DELETE FROM main.t4 WHERE 0 ; SELECT x FROM t4" {1 2 3 4 5}
|
|
3 "DELETE FROM t4 WHERE 0.0 ; SELECT x FROM t4" {1 2 3 4 5}
|
|
4 "DELETE FROM t4 WHERE NULL ; SELECT x FROM t4" {1 2 3 4 5}
|
|
5 "DELETE FROM t4 WHERE y!='two'; SELECT x FROM t4" {2}
|
|
6 "DELETE FROM t4 WHERE y='two' ; SELECT x FROM t4" {}
|
|
7 "DELETE FROM t5 WHERE x=(SELECT max(x) FROM t5);SELECT x FROM t5" {1 2 3 4}
|
|
8 "DELETE FROM t5 WHERE (SELECT max(x) FROM t4) ;SELECT x FROM t5" {1 2 3 4}
|
|
9 "DELETE FROM t5 WHERE (SELECT max(x) FROM t6) ;SELECT x FROM t5" {}
|
|
10 "DELETE FROM t6 WHERE y>'seven' ; SELECT y FROM t6" {one four five}
|
|
}
|
|
|
|
|
|
#-------------------------------------------------------------------------
|
|
# Tests for restrictions on DELETE statements that appear within trigger
|
|
# programs.
|
|
#
|
|
forcedelete test.db2
|
|
forcedelete test.db3
|
|
do_execsql_test e_delete-2.0 {
|
|
ATTACH 'test.db2' AS aux;
|
|
ATTACH 'test.db3' AS aux2;
|
|
|
|
CREATE TABLE temp.t7(a, b); INSERT INTO temp.t7 VALUES(1, 2);
|
|
CREATE TABLE main.t7(a, b); INSERT INTO main.t7 VALUES(3, 4);
|
|
CREATE TABLE aux.t7(a, b); INSERT INTO aux.t7 VALUES(5, 6);
|
|
CREATE TABLE aux2.t7(a, b); INSERT INTO aux2.t7 VALUES(7, 8);
|
|
|
|
CREATE TABLE main.t8(a, b); INSERT INTO main.t8 VALUES(1, 2);
|
|
CREATE TABLE aux.t8(a, b); INSERT INTO aux.t8 VALUES(3, 4);
|
|
CREATE TABLE aux2.t8(a, b); INSERT INTO aux2.t8 VALUES(5, 6);
|
|
|
|
CREATE TABLE aux.t9(a, b); INSERT INTO aux.t9 VALUES(1, 2);
|
|
CREATE TABLE aux2.t9(a, b); INSERT INTO aux2.t9 VALUES(3, 4);
|
|
|
|
CREATE TABLE aux2.t10(a, b); INSERT INTO aux2.t10 VALUES(1, 2);
|
|
} {}
|
|
|
|
|
|
# EVIDENCE-OF: R-09681-58560 The table-name specified as part of a
|
|
# DELETE statement within a trigger body must be unqualified.
|
|
#
|
|
# EVIDENCE-OF: R-12275-20298 In other words, the schema-name. prefix on
|
|
# the table name is not allowed within triggers.
|
|
#
|
|
do_delete_tests e_delete-2.1 -error {
|
|
qualified table names are not allowed on INSERT, UPDATE, and DELETE statements within triggers
|
|
} {
|
|
1 {
|
|
CREATE TRIGGER tr1 AFTER INSERT ON t1 BEGIN
|
|
DELETE FROM main.t2;
|
|
END;
|
|
} {}
|
|
|
|
2 {
|
|
CREATE TRIGGER tr1 BEFORE UPDATE ON t2 BEGIN
|
|
DELETE FROM temp.t7 WHERE a=new.a;
|
|
END;
|
|
} {}
|
|
|
|
3 {
|
|
CREATE TRIGGER tr1 AFTER UPDATE ON t8 BEGIN
|
|
DELETE FROM aux2.t8 WHERE b!=a;
|
|
END;
|
|
} {}
|
|
}
|
|
|
|
# EVIDENCE-OF: R-28818-63526 If the table to which the trigger is
|
|
# attached is not in the temp database, then DELETE statements within
|
|
# the trigger body must operate on tables within the same database as
|
|
# it.
|
|
#
|
|
# This is tested in two parts. First, check that if a table of the
|
|
# specified name does not exist, an error is raised. Secondly, test
|
|
# that if tables with the specified name exist in multiple databases,
|
|
# the local database table is used.
|
|
#
|
|
do_delete_tests e_delete-2.2.1 -error { no such table: %s } {
|
|
1 {
|
|
CREATE TRIGGER main.tr1 AFTER INSERT ON main.t7 BEGIN
|
|
DELETE FROM t9;
|
|
END;
|
|
INSERT INTO main.t7 VALUES(1, 2);
|
|
} {main.t9}
|
|
|
|
2 {
|
|
CREATE TRIGGER aux.tr2 BEFORE UPDATE ON t9 BEGIN
|
|
DELETE FROM t10;
|
|
END;
|
|
UPDATE t9 SET a=1;
|
|
} {aux.t10}
|
|
}
|
|
do_execsql_test e_delete-2.2.X {
|
|
DROP TRIGGER main.tr1;
|
|
DROP TRIGGER aux.tr2;
|
|
} {}
|
|
|
|
do_delete_tests e_delete-2.2.2 {
|
|
1 {
|
|
CREATE TRIGGER aux.tr1 AFTER INSERT ON t8 BEGIN
|
|
DELETE FROM t9;
|
|
END;
|
|
INSERT INTO aux.t8 VALUES(1, 2);
|
|
|
|
SELECT count(*) FROM aux.t9
|
|
UNION ALL
|
|
SELECT count(*) FROM aux2.t9;
|
|
} {0 1}
|
|
|
|
2 {
|
|
CREATE TRIGGER main.tr1 AFTER INSERT ON t8 BEGIN
|
|
DELETE FROM t7;
|
|
END;
|
|
INSERT INTO main.t8 VALUES(1, 2);
|
|
|
|
SELECT count(*) FROM temp.t7
|
|
UNION ALL
|
|
SELECT count(*) FROM main.t7
|
|
UNION ALL
|
|
SELECT count(*) FROM aux.t7
|
|
UNION ALL
|
|
SELECT count(*) FROM aux2.t7;
|
|
} {1 0 1 1}
|
|
}
|
|
|
|
# EVIDENCE-OF: R-31567-38587 If the table to which the trigger is
|
|
# attached is in the TEMP database, then the unqualified name of the
|
|
# table being deleted is resolved in the same way as it is for a
|
|
# top-level statement (by searching first the TEMP database, then the
|
|
# main database, then any other databases in the order they were
|
|
# attached).
|
|
#
|
|
do_execsql_test e_delete-2.3.0 {
|
|
DROP TRIGGER aux.tr1;
|
|
DROP TRIGGER main.tr1;
|
|
DELETE FROM main.t8 WHERE oid>1;
|
|
DELETE FROM aux.t8 WHERE oid>1;
|
|
INSERT INTO aux.t9 VALUES(1, 2);
|
|
INSERT INTO main.t7 VALUES(3, 4);
|
|
} {}
|
|
do_execsql_test e_delete-2.3.1 {
|
|
SELECT count(*) FROM temp.t7 UNION ALL SELECT count(*) FROM main.t7 UNION ALL
|
|
SELECT count(*) FROM aux.t7 UNION ALL SELECT count(*) FROM aux2.t7;
|
|
|
|
SELECT count(*) FROM main.t8 UNION ALL SELECT count(*) FROM aux.t8
|
|
UNION ALL SELECT count(*) FROM aux2.t8;
|
|
|
|
SELECT count(*) FROM aux.t9 UNION ALL SELECT count(*) FROM aux2.t9;
|
|
|
|
SELECT count(*) FROM aux2.t10;
|
|
} {1 1 1 1 1 1 1 1 1 1}
|
|
do_execsql_test e_delete-2.3.2 {
|
|
CREATE TRIGGER temp.tr1 AFTER INSERT ON t7 BEGIN
|
|
DELETE FROM t7;
|
|
DELETE FROM t8;
|
|
DELETE FROM t9;
|
|
DELETE FROM t10;
|
|
END;
|
|
INSERT INTO temp.t7 VALUES('hello', 'world');
|
|
} {}
|
|
do_execsql_test e_delete-2.3.3 {
|
|
SELECT count(*) FROM temp.t7 UNION ALL SELECT count(*) FROM main.t7 UNION ALL
|
|
SELECT count(*) FROM aux.t7 UNION ALL SELECT count(*) FROM aux2.t7;
|
|
|
|
SELECT count(*) FROM main.t8 UNION ALL SELECT count(*) FROM aux.t8
|
|
UNION ALL SELECT count(*) FROM aux2.t8;
|
|
|
|
SELECT count(*) FROM aux.t9 UNION ALL SELECT count(*) FROM aux2.t9;
|
|
|
|
SELECT count(*) FROM aux2.t10;
|
|
} {0 1 1 1 0 1 1 0 1 0}
|
|
|
|
# EVIDENCE-OF: R-28691-49464 The INDEXED BY and NOT INDEXED clauses are
|
|
# not allowed on DELETE statements within triggers.
|
|
#
|
|
do_execsql_test e_delete-2.4.0 {
|
|
CREATE INDEX i8 ON t8(a, b);
|
|
} {}
|
|
do_delete_tests e_delete-2.4 -error {
|
|
the %s %s clause is not allowed on UPDATE or DELETE statements within triggers
|
|
} {
|
|
1 {
|
|
CREATE TRIGGER tr3 AFTER INSERT ON t8 BEGIN
|
|
DELETE FROM t8 INDEXED BY i8 WHERE a=5;
|
|
END;
|
|
} {INDEXED BY}
|
|
2 {
|
|
CREATE TRIGGER tr3 AFTER INSERT ON t8 BEGIN
|
|
DELETE FROM t8 NOT INDEXED WHERE a=5;
|
|
END;
|
|
} {NOT INDEXED}
|
|
}
|
|
|
|
ifcapable update_delete_limit {
|
|
|
|
# EVIDENCE-OF: R-64942-06615 The LIMIT and ORDER BY clauses (described
|
|
# below) are unsupported for DELETE statements within triggers.
|
|
#
|
|
do_delete_tests e_delete-2.5 -error { near "%s": syntax error } {
|
|
1 {
|
|
CREATE TRIGGER tr3 AFTER INSERT ON t8 BEGIN
|
|
DELETE FROM t8 LIMIT 10;
|
|
END;
|
|
} {LIMIT}
|
|
2 {
|
|
CREATE TRIGGER tr3 AFTER INSERT ON t8 BEGIN
|
|
DELETE FROM t8 ORDER BY a LIMIT 5;
|
|
END;
|
|
} {ORDER}
|
|
}
|
|
|
|
# EVIDENCE-OF: R-40026-10531 If SQLite is compiled with the
|
|
# SQLITE_ENABLE_UPDATE_DELETE_LIMIT compile-time option, then the syntax
|
|
# of the DELETE statement is extended by the addition of optional ORDER
|
|
# BY and LIMIT clauses:
|
|
#
|
|
# -- syntax diagram delete-stmt-limited
|
|
#
|
|
do_delete_tests e_delete-3.1 {
|
|
1 "DELETE FROM t1 LIMIT 5" {}
|
|
2 "DELETE FROM t1 LIMIT 5-1 OFFSET 2+2" {}
|
|
3 "DELETE FROM t1 LIMIT 2+2, 16/4" {}
|
|
4 "DELETE FROM t1 ORDER BY x LIMIT 5" {}
|
|
5 "DELETE FROM t1 ORDER BY x LIMIT 5-1 OFFSET 2+2" {}
|
|
6 "DELETE FROM t1 ORDER BY x LIMIT 2+2, 16/4" {}
|
|
7 "DELETE FROM t1 WHERE x>2 LIMIT 5" {}
|
|
8 "DELETE FROM t1 WHERE x>2 LIMIT 5-1 OFFSET 2+2" {}
|
|
9 "DELETE FROM t1 WHERE x>2 LIMIT 2+2, 16/4" {}
|
|
10 "DELETE FROM t1 WHERE x>2 ORDER BY x LIMIT 5" {}
|
|
11 "DELETE FROM t1 WHERE x>2 ORDER BY x LIMIT 5-1 OFFSET 2+2" {}
|
|
12 "DELETE FROM t1 WHERE x>2 ORDER BY x LIMIT 2+2, 16/4" {}
|
|
}
|
|
|
|
drop_all_tables
|
|
proc rebuild_t1 {} {
|
|
catchsql { DROP TABLE t1 }
|
|
execsql {
|
|
CREATE TABLE t1(a, b);
|
|
INSERT INTO t1 VALUES(1, 'one');
|
|
INSERT INTO t1 VALUES(2, 'two');
|
|
INSERT INTO t1 VALUES(3, 'three');
|
|
INSERT INTO t1 VALUES(4, 'four');
|
|
INSERT INTO t1 VALUES(5, 'five');
|
|
}
|
|
}
|
|
|
|
# EVIDENCE-OF: R-44062-08550 If a DELETE statement has a LIMIT clause,
|
|
# the maximum number of rows that will be deleted is found by evaluating
|
|
# the accompanying expression and casting it to an integer value.
|
|
#
|
|
rebuild_t1
|
|
do_delete_tests e_delete-3.2 -repair rebuild_t1 -query {
|
|
SELECT a FROM t1
|
|
} {
|
|
1 "DELETE FROM t1 LIMIT 3" {4 5}
|
|
2 "DELETE FROM t1 LIMIT 1+1" {3 4 5}
|
|
3 "DELETE FROM t1 LIMIT '4'" {5}
|
|
4 "DELETE FROM t1 LIMIT '1.0'" {2 3 4 5}
|
|
}
|
|
|
|
# EVIDENCE-OF: R-02661-56399 If the result of the evaluating the LIMIT
|
|
# clause cannot be losslessly converted to an integer value, it is an
|
|
# error.
|
|
#
|
|
do_delete_tests e_delete-3.3 -error { datatype mismatch } {
|
|
1 "DELETE FROM t1 LIMIT 'abc'" {}
|
|
2 "DELETE FROM t1 LIMIT NULL" {}
|
|
3 "DELETE FROM t1 LIMIT X'ABCD'" {}
|
|
4 "DELETE FROM t1 LIMIT 1.2" {}
|
|
}
|
|
|
|
# EVIDENCE-OF: R-00598-03741 A negative LIMIT value is interpreted as
|
|
# "no limit".
|
|
#
|
|
do_delete_tests e_delete-3.4 -repair rebuild_t1 -query {
|
|
SELECT a FROM t1
|
|
} {
|
|
1 "DELETE FROM t1 LIMIT -1" {}
|
|
2 "DELETE FROM t1 LIMIT 2-4" {}
|
|
3 "DELETE FROM t1 LIMIT -4.0" {}
|
|
4 "DELETE FROM t1 LIMIT 5*-1" {}
|
|
}
|
|
|
|
# EVIDENCE-OF: R-26377-49195 If the DELETE statement also has an OFFSET
|
|
# clause, then it is similarly evaluated and cast to an integer value.
|
|
# Again, it is an error if the value cannot be losslessly converted to
|
|
# an integer.
|
|
#
|
|
do_delete_tests e_delete-3.5 -error { datatype mismatch } {
|
|
1 "DELETE FROM t1 LIMIT 1 OFFSET 'abc'" {}
|
|
2 "DELETE FROM t1 LIMIT 1 OFFSET NULL" {}
|
|
3 "DELETE FROM t1 LIMIT 1 OFFSET X'ABCD'" {}
|
|
4 "DELETE FROM t1 LIMIT 1 OFFSET 1.2" {}
|
|
5 "DELETE FROM t1 LIMIT 'abc', 1" {}
|
|
6 "DELETE FROM t1 LIMIT NULL, 1" {}
|
|
7 "DELETE FROM t1 LIMIT X'ABCD', 1" {}
|
|
8 "DELETE FROM t1 LIMIT 1.2, 1" {}
|
|
}
|
|
|
|
|
|
# EVIDENCE-OF: R-64004-53814 If there is no OFFSET clause, or the
|
|
# calculated integer value is negative, the effective OFFSET value is
|
|
# zero.
|
|
#
|
|
do_delete_tests e_delete-3.6 -repair rebuild_t1 -query {
|
|
SELECT a FROM t1
|
|
} {
|
|
1a "DELETE FROM t1 LIMIT 3 OFFSET 0" {4 5}
|
|
1b "DELETE FROM t1 LIMIT 3" {4 5}
|
|
1c "DELETE FROM t1 LIMIT 3 OFFSET -1" {4 5}
|
|
2a "DELETE FROM t1 LIMIT 1+1 OFFSET 0" {3 4 5}
|
|
2b "DELETE FROM t1 LIMIT 1+1" {3 4 5}
|
|
2c "DELETE FROM t1 LIMIT 1+1 OFFSET 2-5" {3 4 5}
|
|
3a "DELETE FROM t1 LIMIT '4' OFFSET 0" {5}
|
|
3b "DELETE FROM t1 LIMIT '4'" {5}
|
|
3c "DELETE FROM t1 LIMIT '4' OFFSET -1.0" {5}
|
|
4a "DELETE FROM t1 LIMIT '1.0' OFFSET 0" {2 3 4 5}
|
|
4b "DELETE FROM t1 LIMIT '1.0'" {2 3 4 5}
|
|
4c "DELETE FROM t1 LIMIT '1.0' OFFSET -11" {2 3 4 5}
|
|
}
|
|
|
|
# EVIDENCE-OF: R-48141-52334 If the DELETE statement has an ORDER BY
|
|
# clause, then all rows that would be deleted in the absence of the
|
|
# LIMIT clause are sorted according to the ORDER BY. The first M rows,
|
|
# where M is the value found by evaluating the OFFSET clause expression,
|
|
# are skipped, and the following N, where N is the value of the LIMIT
|
|
# expression, are deleted.
|
|
#
|
|
do_delete_tests e_delete-3.7 -repair rebuild_t1 -query {
|
|
SELECT a FROM t1
|
|
} {
|
|
1 "DELETE FROM t1 ORDER BY b LIMIT 2" {1 2 3}
|
|
2 "DELETE FROM t1 ORDER BY length(b), a LIMIT 3" {3 5}
|
|
3 "DELETE FROM t1 ORDER BY a DESC LIMIT 1 OFFSET 0" {1 2 3 4}
|
|
4 "DELETE FROM t1 ORDER BY a DESC LIMIT 1 OFFSET 1" {1 2 3 5}
|
|
5 "DELETE FROM t1 ORDER BY a DESC LIMIT 1 OFFSET 2" {1 2 4 5}
|
|
}
|
|
|
|
# EVIDENCE-OF: R-64535-08414 If there are less than N rows remaining
|
|
# after taking the OFFSET clause into account, or if the LIMIT clause
|
|
# evaluated to a negative value, then all remaining rows are deleted.
|
|
#
|
|
do_delete_tests e_delete-3.8 -repair rebuild_t1 -query {
|
|
SELECT a FROM t1
|
|
} {
|
|
1 "DELETE FROM t1 ORDER BY a ASC LIMIT 10" {}
|
|
2 "DELETE FROM t1 ORDER BY a ASC LIMIT -1" {}
|
|
3 "DELETE FROM t1 ORDER BY a ASC LIMIT 4 OFFSET 2" {1 2}
|
|
}
|
|
|
|
# EVIDENCE-OF: R-37284-06965 If the DELETE statement has no ORDER BY
|
|
# clause, then all rows that would be deleted in the absence of the
|
|
# LIMIT clause are assembled in an arbitrary order before applying the
|
|
# LIMIT and OFFSET clauses to determine the subset that are actually
|
|
# deleted.
|
|
#
|
|
# In practice, the "arbitrary order" is rowid order.
|
|
#
|
|
do_delete_tests e_delete-3.9 -repair rebuild_t1 -query {
|
|
SELECT a FROM t1
|
|
} {
|
|
1 "DELETE FROM t1 LIMIT 2" {3 4 5}
|
|
2 "DELETE FROM t1 LIMIT 3" {4 5}
|
|
3 "DELETE FROM t1 LIMIT 1 OFFSET 0" {2 3 4 5}
|
|
4 "DELETE FROM t1 LIMIT 1 OFFSET 1" {1 3 4 5}
|
|
5 "DELETE FROM t1 LIMIT 1 OFFSET 2" {1 2 4 5}
|
|
}
|
|
|
|
|
|
# EVIDENCE-OF: R-07548-13422 The ORDER BY clause on a DELETE statement
|
|
# is used only to determine which rows fall within the LIMIT. The order
|
|
# in which rows are deleted is arbitrary and is not influenced by the
|
|
# ORDER BY clause.
|
|
#
|
|
# In practice, rows are always deleted in rowid order.
|
|
#
|
|
do_delete_tests e_delete-3.10 -repair {
|
|
rebuild_t1
|
|
catchsql { DROP TABLE t1log }
|
|
execsql {
|
|
CREATE TABLE t1log(x);
|
|
CREATE TRIGGER tr1 AFTER DELETE ON t1 BEGIN
|
|
INSERT INTO t1log VALUES(old.a);
|
|
END;
|
|
}
|
|
} -query {
|
|
SELECT x FROM t1log
|
|
} {
|
|
1 "DELETE FROM t1 ORDER BY a DESC LIMIT 2" {4 5}
|
|
2 "DELETE FROM t1 ORDER BY a DESC LIMIT -1" {1 2 3 4 5}
|
|
3 "DELETE FROM t1 ORDER BY a ASC LIMIT 2" {1 2}
|
|
4 "DELETE FROM t1 ORDER BY a ASC LIMIT -1" {1 2 3 4 5}
|
|
}
|
|
|
|
}
|
|
|
|
finish_test
|